TIRES FAILED TO PASS FEDERAL MOTOR VEHICLE SAFETY STANDARD 109 HIGH SPEED TESTDUE TO SEPARATION OF THE FIBERGLASS BELTS FROM THE POLYESTER CARCASS.THISFAILURE IS SUSPECTED OF BEING CAUSED BY EXCESSIVE HEAT BUILD-UP DUE TO TREADSHOULDER GAUGES IN EXCESS OF THE PRODUCTION TOLERANCE.(CORRECT BY REPLACEMENTWITHIN 60 DAYS OF NOTIFICATION OR IF AFTER THAT DATE AT THE REGULAR ADJUSTMENTPOLICY).